Governor.



PATENTED' APR. 2, 1907.

' V W. HARDWIGK- GOVERNOR.

APPLICATION FILED FEB. 4, 1907.

r": mamas PETERS ca. WASHINGTON. n c.

UNITED STATES PATENT orrion.

GINE WORKS, SYLVANIA.

OF ERIE, PENNSYLVANIA, A CORPORATION OF PENN- GOVERNOR.

Specification of Letters Patent.

Patented April 2, '1907.

Application filed F r ry 4, 1907. Serial No. 355.760.

1?) (1,7 7 whom, it may concern:

Be it known that I, WILLLAM HARDWICK, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Engine-Governors and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

My invention relates to steam-engine governors, and particularly to the type of such governors having weights secured to and suspended upon the ends of leaf-springs secured to the governor-wheel up on movable fulcrums and extending across the face thereof substantially parallel to each other, and has for its object the providing of a movable fulcrum having a loop thereon embracing the heel of the spring and the providing of means for securing the weights to the end of the springs in such a manner as to entirely overcome the breakage of the springs at that point, which as the weights are now com monly. attached to the ends of the springs is of frequent occurrence.

The features of my invention are hereinafter fully set forth and explained, and illustrated in the accompanying drawings, in which Figure 1 is aview in elevation of a steamengine governor embodying my improvements. Fig. 2 is a transverse section of the same on the line a: w in Fig. 1 looking in the direction of the arrow. Fig. 3 is an enlarged detail showing my improved weight attachment. Fig. 4 is an enlarged detail showing my improved movable spring-fulcrum. Fig. 5 is an end view of the same, with the spring in section, on the line y y looking in the direction of the arrow. Fig. 6 is a side view in elevation, showing a modified construction of my improved movable spring-fulcrum.

In these drawings, A is a steam-engine governor-wheel, B a shifting eccentric, O O leaf-springs on the governor-wheel, D D centrifugal weights on the ends of the springs O C, and E E links connecting the shifting eccentric B with the weights D D, all of which parts are of the usual type, except as hereinafter set forth and described.

The brackets F F, upon which the heels of the springs C O are secured, are bolted to the inside of the rim of the wheel Ain the usual manner and are provided with the usual stud-bolts G G, passing through the holes in the heels of the springs O O. he faces F of the brackets F are provided with a central groove f, and the edges of these grooves are provided with serrated teeth j". Upon these grooved and serrated faces F of the brackets F, I place a spring fulcrum-block H, provided with a tongue It, fitting in the groove f, and with serrated teeth It, fitting into the serrated teeth f, which fulcrumblocks H can be moved back and forth upon the brackets F, as may be desired, to increase or diminish the tension of the springs C. Secured to the fulcrum-blocks H are inverted-U-shaped loops H, which embrace the sides of the springs O and are secured to the sides of the fulcrum-blocks H by means of bolts h passing therethrough, whereby the leaves of the springs C are retained in their proper alinement without in any wise impairing the efficiency of the springs.

In Fig. 6 I show a modified construction of the fulcrum-block, which consists, substantially, in making it in the form of a roller H provided on about one-half of its periphery with a tongue h, operating in the groove f in the face F of the bracket F, the portions of the periphery of the roller H at the sides of the tongue /2, being provided with serrated teeth h, which engage the serrated teeth f in the bracket F, so that the roller-fulcrum H may be rolled back and forth on the face F of the bracket F to change its location as a fulcrum under the spring O, and thereby vary the tension thereof, and on the bolt h passing through the loop H and the rollerfulcrum H being tightened up the rollerfulcrum H" is retained from any rotation or change of position. For securing the weights D to the ends of the springs O, I provide a projection D on the side of the weights D, through which there is a longitudinal slot d, adapted to receive the ends of the long leaves a and c of the springs C, and in the inner face of the slot (1 there is a transverse slot (1, adapted to receive the downturned end a of the leaf 0 of the spring, as clearly shown in Fig. 3, and through the projection D there is a set-screw (1 adapted to be set down upon the ends of the leaves 0 and c of the spring after they have been inserted into the slot d. In securing the weight D to the spring 0 the leaf 0 thereof is first inserted in the slot d with the downturned end 0 in the slot (1. The end of the leaf 0' of the spring is then inserted in the slot d and the set-screw d screwed down upon it, as illustrated in Fig. 3. The remaining leaves of the spring being then put in place, the heel thereof is secured to the bracket F, as hereinbefore described.

Having thus described my invention so as to enable others to utilize the same, what I claim as new is 1. In a steam-engine governor the combination of a leaf-spring, a bracket having a groove thereon, serrations at the sides of the groove in the bracket, a stud-bolt in said bracket passing through the heel of the spring, a fulcrum-block between the spring and the bracket, a tongue on the fulcrumblock engaging the groove in the bracket, serrations onthe fulcrum-block at the sides of the tongue thereon to engage the serrations in the bracket, and a loop embracing the spring and secured to the fulcrum-block, substantially as set forth.

2. In a steam-engine governor the combination of a fulcrum-bracket, a leaf-spring secured thereto, a downturned end on the longer leaf of said spring, a weight, an eXten sion thereon having a longitudinal slot therein to receive the longer leaves of the spring, and a transverse slot to receive the downturned end of one of said leaves, substantially as set forth.

3. In a steam-engine governor the combination of a leaf-spring, a downturned end on one of the'longer leaves thereof, a weight, an extension on one side of the weight, a longitudinal slot to receive the longer leaves of the spring and a transverse slot in the weight to receive the downturned end on the spring, and a set-screw in said extension, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM HARDWICK.

Witnesses:

H. M. STURGEoN, G. J. MEAD. 

